Hello.
Need advice asap pls.
Currently in progress of remodeling our bathroom with a known company in our city.
Today got concerns about my shower.
The gaps are really bothering me.
Also, do they need to tape walls before punting tiles on it ?
Also I did not seen any "orange" waterproofing materials , only black plastic on the floor
I'm not a specialists , l don't know if its supposed to be this way.
Please l need help.

What you're looking at is fairly common "builder standard" stuff. If you ask for a shower, this is what you get. If you want a Kerdi or similar system, you have to specify it. Taping is not important. A waterproof backing product is very nice to have, but if you don't specify it, it's not code and won't usually be included.

What bothers me more is they didn't centre the drain so they had to trim tiles very narrow to make the floor work. If someone took their time, that could have been dead centre of the shower floor and worked perfectly.

Last I knew the green stuff wasn't much better. Fibreglass-faced board is better. Cement board is better still. Kerdi over any drywall is supposed to be a great product, and there are similar competitors.

Last I knew the green stuff wasn't much better. Fibreglass-faced board is better. Cement board is better still. Kerdi over any drywall is supposed to be a great product, and there are similar competitors.